Type-writing machine.



WiTNEEEE5= i A, J. BRIGGS.

TYPE WRITING MACHINE.

APYLICATION FILED AUG. 4, 1913.

1,1323%, 4 Pzitented Mar. 16,1915.

. or for grit that may work its way into the Unrrnn snares Parents ermine.

ARTHUR J. names, orsynaonsn, NEW YORK, assre von TO REMINGTON ryrnwnrrnn COMPANY, or ILION, NEW YORK, A conloaarron or NEW roan.

TYPE-WRITING MACHINE.

supporting the carriage for movement from;

side to side of the machine.

The main object of my invention is to provide simple and efiicient means for mounting and supporting the carriage on roller bearings so as to automatically compensa-te for any unevenness in the bearings,

bearings and so as to automatically take up and compensate for any wear on the parts.

To the above and other ends which will hereinafter appear, my invention consists in the features 'of construction, arrangements of parts and combinations of devices set forth in the following specification and particularly pointed out in the appended claims. In the accompanying drawings wherein like reference characters indicate corre' sponding parts in the various views, Figure 1 is a fragmentary vertical sectional view of a carriage and the means for supporting the same. Fig. 2 is a detail face view of a separator for the anti-friction rollers. Fig. 3' is a detail rear view of the construction shown in Fig. 1 with parts broken away. Fig. 4 is a plan view of the same with parts broken away and parts omitted.

. In the present instance I have shown my invention embodied in a front-strike typewriting machine and have only illustrated,

cordingly.

A shiftable supporting member 1 is connected to the frame 2 of the machine by Specification of Letters Patent.-

indicated in Fig. 3. '1 stance I have shown two sets of anti-friction in Fig. 1. The shiftable part or frame 1 may receive its case shifting movement by any suitable means, such for example, as those disclosed in my pending application, Sr. No. 791,734, filed Sept. 25, 1913. The member 1 is providedwith a guide rail 4 grooved in its forward face as at 5 to form a ball race for anti-friction balls or rollers 6. The length of this rail corresponds substantially t0 the length of the carriage, as

In the present inballs' or rollers 6, one set being arranged near each end of the rail 4 when the carriage is centrally disposed as represented in Fig. 3. These anti-friction rollers are received in openings 7 in a roller separator 8. This separator is enlarged at its ends and con- Patented Mar. 16,1915.

Application filed August a, 1913. Serial No. 782,859.

tracted at the center portion thereof, as indicat-ed at 9, to form shoulders or abutments 10 where the enlarged portions join the contracted center portion of the separator. A centrally disposed pin 11 projects forwardly beneath the contracted portion 9 of the separator and into the space between the shoulders 10. This pin limits the movement of the separator with the anti-friction rollers along the track it ZlIlCiflSSIll s a proper positioning oi'jthe separator andthe antifriction balls controlled thereby with reference to the carriage.

The shiftable member 1 has a resilient plate 12 secured thereto by screws 13. This plate is grooved throughout its length, as indicated at 14, to provide a race-way in which one or more anti-friction balls or rollers 15 v are received, From an inspection of Fig. 3

it will be observed that the plate 12 is centrally disposed and comparatively short, it being about one-half the length of the rail 4. Each end of the plate is provided with a finger 16 which is bent rearwardly into the path of the anti-friction balls 15 to prevent a displacement of theballs 15 from the raceway 14.1The resilient plate 12 exerts a pressure rearwardly against the balls 15 for purposes which will hereinafter more clearly appear. I

The carr' aige comprises a substantially horizontally disposed supporting memheti? which is substantially C-shaped in cross section and opens downwardly and extends over and around the bearing grooves in the tracks 4: and 14. This member is formed from a single piece of sheet metal with longitudinally extending guide rails, tracks, grooves or race-ways 18 and 19 therein, the race-way 18 being disposed oppositely the groove 14 in the plate 12 and the groove 19 being disposed opposite the groove in the rail 4, as shown in Fig. 1.

End plates 20 extend upwardly from the supporting member 17 and are secured thereto by headed screws 21 which extend through openings in the supporting member and are received at their threaded ends in tapped openings in the lower edges of the end plates 20. A tie rod 22 connects the end plates, and a platen shaft 23 is received in bearing openings in the end-plates. This shaft supports a platen 24 aga nst the front face of which the type bars 25 are adapted to strike. It will be seen that the entire carriage proper consists of the supporting member 17 the end plates 20 and the tie rod 22. The resilient plate 12 normally-exerts a rearward pressure on the anti-friction rollers 15 tending to move the guide rail or way 14 away from the rail 4. This tends to force the supporting member 17'to the rear and exert a rearward pressure against the anti-friction balls or rollers 6, the pressure of the balls 6 being resisted by the relatively fixed rail 4. It will be understood therefore that the resiliency of the plate .12 is exerted to automatically compensate for any unevenness or irregularity in the roller. bearing support for the carriage and to compensate for any grit that may happen to work its way into the bearings. However, it will be seen that there is but little opportunity for grit or dust to gain access to the bearings, inasmuch as they are well protected by the supporting member 17 which with the rail (l and the plate 12 almost completely surround the roller bearings.

It will be understood that the rail 4: forming a part of the shifting frame 1 and carrying the plate 12 constitutes in effect a shift rail by, which the carriage may receive a case shifting movement. It will be understood, .moreover, that by the use of the spring supported track or rail 14 it is unnecessary to maintain a nice adjustment between the roller bearings in order to render them efficient to eifectively support and guide the carriage without undue freedom and without undue binding between. different parts of the bearing and that the resiliency of the plate 12 enables the bearings to automatically take up and compensate for any wear that may take place thereon.

Various changes may be made without departing from the spirit and scope of my invention.

What I, claim as new and desire to secure by Letters Patent, is

- 1. Means for supporting the carriage of a typewriting machine, said means comprismg guide rails one of which is carried by a resilient plate, and anti-friction rollers intel-posed between oneof said rails and the rail which is carried by said resilient plate.

typewriting machine, said means compris- .ing four giude rails one of which is "received between two of the other rails and is formed from a resilient plate, and anti-friction rollers co-acting with said guide rails.

5. In a typewriting machine, the combination of a platen; and supporting means therefor comprising a member which is substantially Csha.ped in cross section, saidmember forming opppsite guide rails, opposite guide rails received in said C-shaped member, one of the latter rails being kept in its working position by spring pressure,- and anti-friction rollers interposed between the rails of said C-shaped member and the rails which are received in said member.

6. In a typewriting machine, the combination of a platen; and supporting means therefor comprising a plurality of grooved guide rails, one of which is arelatively short centrally disposed rail in the nature of a grooved resilient plate, one or more anti-friction rollers contained in the groove of. said resilient plate and which are substantially centered therein when the platen is centered, and a plurality of anti-friction rollers between the other companion guide rails and disposed nearer the ends of the platen when the platen is centered.

7. In a typewriting machine, the combination of a platen; and supporting means therefor comprising a member which is substantially C-shaped in cross section, said member forming oppositely disposed guide rails, oppositely disposed guide rails re ceived in said Q=shaped member and one of which is in the nature of a resilient guide plate, and anti-friction rollers interposed between said rails.

8. In a typewriting machine, the combination of a platen; and supporting means therefor comprising a single-piece member which is substantially C-shaped in crosssection, said member forming oppositely grooved guide rails, oppositely grooved guide rails received in said C-sheped member and one of which is in the nature. oil a resilient grooved guide plate, and anti-friction rollers contained 'Within the grooves in said rails. v I

9. In a typewriting machine, the combination of a platen; and supporting means therefor comprising a member which is substantially C- sheped in crosssection, said member being carried by or forming part of the carriage and forming oppositely disposed grooved guide rails, and oppositely grooved guide rails carried by the frame of the machine and received in said C-sha'ped member, one of said last mentioned guide rails being in the nature of a resilient grooved plate flexed away from the other of the rails received in the C-shaped member,

and anti-friction rollers contained within the grooves in said rails.

10. In a typewriting machine, the combination of a platen; and suporting means therefor comprising a single-piece member which is substantially G-shaped in crosssection and is carried by or tormspart of the carriage and forms oppositely disposed grooved guide rails, the said S-shaped mere or being arranged with its closed side uppermost, oppositely grooved guide rails carried by the frame of the machine, and anti-- friction rollers between the rails on the carriage and those on the Era-me oi": the machine, one of the latter rails being kept in its Working position by spring pressure.

11. In a typewriting machine, the combi nation of e platen; and supporting means therefor comprisin a member which-is substaptially C-shepe in cross section and is formed with oppositely grooved rails, a shift-able grooved rail received in said Q- shaped member, a grooved rail formed of pi resilient plate fixed to said shiftable rai endreneived in said Q-shaped member, and anti-friction rollers contained Within the grooves of said rails. 12. In a typewriting machine, the combination of e. platen; and en porting means therefor comprising a sing e-piece member whichis substantially Q-sheped in cross-section and substantially horizontally disposed and formed with oppositely grooved rails, said member being arranged with its closed side uppermost, oppositely grooved rails received in said C-shaped member, one of the latter rails being kept in its Working position by spring pressure, means for shiftably supporting said last mentioned rails, and anti-friction rollers interposed between said railsv 13. In a, typewriting machine, the combination of a platen; and supporting means therefor comprising a single-piece member which is substantially ill-shaped in cross-section and is substantially horizontally disposed and formed with oppositely grooved rails, said member being arranged with its closed side uppeunost, oppositely grooved rails received in said T-sheped member, one of said last mentioned rails being in the ne ture of a grooved resilient plate shorter than the other rails and secured to the other rail which is received in the C shaped member, said last mentioned rail being shii'tably mounted, one or more antiiriction rollers contained in the groove of the resilient plate and substantially centrally disposed therein when the platen is centered, and a plurality of anti-friction rollers in the grooves of the other companion rails and disposed nearer the ends of the platen when the platen is centered. I

14,-. In a typewriting \aohine, the combi nation of a platen; end suppor 3 therefor compri s merncer which. is substantially (3 in cross-section and forms opposie :1 disposed guide rails, op positely disposed. guide rails received in said ll-shaped member, spring meansdoi: separating said last mentioned rails, entifriction rollers interposed between the rails of said C-shaped member and the rails which are received in member, and parallel links on which the rails received in said shaped member monnted'and by which they are guided 1:3. in e typewr machine, the combination of a carriage comprising a substantielly horizont 5y supporting member which is 3 L i cross section andis niece; shifteble sup porting rails re in said sup orting member: said shi mwble rails being re stively movabletoward and from each other; and anti-friction rollers between said sup porting memb r and shiftable rails.

16. in ewriting machine, the combination of e ing'e comprising a substantially horizc silly disposed supporting member which is substantially C-shsp'ed in cross section and is formed from a single piece, end plates secured to said supportin member, and a tie rod connecting said end plates; shiitsble supporting rails received in said supporting member, said shifts-ole rails being relatively movable tower-ti and away from each other; and anti-friction rollers between said supporting member and shifteble rails.

ing said carriage, said carriage supporting Signed at Syraouse, in the county of means including a resilient grooved plate Onondaga, and State of New York, this 30 10 and anti-friction rollers received in the day of July A. D. 1913.

groot e in said plate, the plate being pro-- ARTHUR J BRIGGS vided at its ends With fingers which are bent into the path of said anti-friction rollers Eu Vitnesses: I prevent the escape of the rollers from the HERBERT A..CARHART,

' groove in the plate. D. E. WARING. 

